To find the housekeeper module of Cloud Class, you can follow the following steps:

1. Open the official website of Cloud Class.

2. Log in to your Yunban class account.

3. Enter the course management page, find the course where you need to add a butler, and click to enter.

4. On the course details page, find the "Course Settings" column on the left, find the "Class Manager" option in the drop-down list, and click to enter.

5. After entering the class housekeeper page, you can set the functions of the class housekeeper as needed, such as adding smart question banks, setting assignments, publishing announcements, etc.